.travis.yml in carrasco-0.1.3 vs .travis.yml in carrasco-0.1.4

@@ -1,4 +1,11 @@
 language: ruby
-rvm:
-  - 2.2.1
+
 before_install: gem install bundler -v 1.10.6
+
+rvm:
+  - 1.9
+  - 2.0
+  - 2.1
+  - 2.2
+
+sudo: false